Rod-straightening mechanism.



R. MILNE. ROD STRAIGHTENIN G MECHANISM. APPLICATION FILED NOV. 25, 1907.

Patented Nqv. 17, 1908.

UNITED STATES ragnnr OFFICE.

ROEERT MILNE, OF ROCKFORD, ILLINOIS, ASSIGNOR TO B F. BARNES COMPANY, A COR- PORATION OF ILLINOIS.

ROD-STRAIGHTENING MECHANISM.

Specification of Letters Patent.

Patented Nov. 17, 1908.

ordinari y have slight bends or deflections when delivered to the machine shop.

The ob ect of the invention is to provide a slnrgle. convenient and easllv manipulated htening head adapted to exerta high degrego'l pressure on any defective portion of a said and adapted to he moved without difficulty to any position required in varying lens, j

ginvcntion further relates to the means forriinparting rev,olntion to the rod from timeto time during the straightening operation in order to test the same; and toithe means provided for automatically raising the rod from a position of rest and thereafter imparting the necessary rotation thereto.

The invention consists in the features of construction and combination of parts hereinafter described and claimed.

In the drawings'Fignre 1 is a side elevation of the entire device: Fig. 2 a sectional elevation of the adjustable hearing head and movable frame; Fig. 4) a (:I'osfi sectional elevation of the cone bearing for the work and the mounting therefor; Fig. 4 a-plan view of the same; Fig. 5 a planview of the hand wheel and ratchet; Fig. 6 a sectional elevation of the friction clutch; and Fig. 7 a cross sectional view taken through line 77 of F 6 looking in the direction of the arrow.

The straightening mechanism as a whole is mounted upon a table 8 having legs 9 of sufficient length to raise the work to a convenient level for manipulation. The table is provided with a top plate 10, the edges of which project. beyond theremainder of the table sutliciently to provide overhanging guideways -\\'hich are parallel with one another and extend from, end to end of the table. The table is provided in its center with a longitudinally extendingslot 11 of invert ed T formation, which slot opens into a longitudinallyextending channel 12 in the center of the table surface.

nel furnish a guideway for the adjustn'ient of the travelingcompressor frame and the adjustable bearing to be hereinafter described. I

At one end of the table are located outer and inner journal boxes 12 and 13, respectively, which furnish the bearing for a revolnble shaft 14, having on its end a cone pulley 15. From the inner end of the shaft projects. a cone stud 16, shown in Fig. (3,

which stud projects inwardly beyond the inner journal box 13 and cooperates with a movable clutch disk 17, which is slidably mounted upon two pins or studs 18, which inwardly project from the face of the shaft head 18 and are slidably mounted within recesses 19 in the clutch disk. The pins are supplemented by two coiled springs 20, the ends of which are entered intorecesses 21 and in the inner end of the shaft head and the rear face of the clutch disk respectively. the guideways and springs being alternately arranged with respect to one another. The acting face of the friction disk is covered by a leather washer 23 which gives the required friction in imparting rotation to the work. The friction clutch cooperates with a. cone bearing rod 24 located at the opposite end of the table and mounted within a sleeve 25 which, as shown in Fig.3, is split on one side and is provided with outwardly extending ears 26. The cars are adapted to be clamped together by means of a screw bolt 27 which can be tightened up by a handle 28 as shown in Fig. 3. This enables the cone bearing rod to be adjusted and thereafter clamped in different positions. The rear end 29 of the bearing rod is engaged by a slotted lever 30 the end of which is pivoted to an arm 31 rearwardly and laterally projecting from the farther or rear side of the split sleeve, which arrangement permits manipulation of the bearing rod. The sleeve is supported upon lugs 32 which are connected with a bed plate 33 provided with a tongue 34 which enters the channel 12 in the surface of the table and permits the bed plate to be moved to different positions of adjustment. The. bed plate has entered therethrough a bolt 35 the head of which is entered into the inverted T slot in the table and is adapted to be clamped against the overhanging walls thereof by means of a handle 36.

The work 37 is journaled at its rear end The slot and cl1an-.rnpon the cone bearing, and when notbeing rality of lugs 49.

rotated rests upon a pair of: blocks 38-each of which is provided with a concave opening 39 in its upper face, and is provided with a tongue 40 adapted to enter the groove in the table. The size of the blocks is such that they will support the work, when in a state of rest, at a position slightly below the apex of the cone stud which revolves with the shaft and with the friction clutch member thereon.

The top plate of the table serves as a track or guideway for a traveling frame or mounting 41 of inverted U shape, which is provided at its lower end with inturned fingers :2 which engage the edge of the table top and serve to position'the frame or mounting during its travel along the table. Above the fingers, on each side of the mounting or frame, are a pair of lugs 43 each of which has pivoted thereto a roller 44, which rollers rest upon the top of the table adjacentto the edge thereof and provide an easy means for moving the frame or mounting from one position to another. The U shaped frame has entered through its head 45 a screw 46 pro vided on its upper end witha-hand wheel 4.7, which hand wheel is provided with a hub t8 upon the face of which are located a plu- In adjusting the screw the hand wheel can be used, or if. additional power is required, a. hand lever 50 provided with a dog 51 can be employed, which lever, being longer than the radius of the wheel, affords increased leverage in case the wheel prove insufiicient to afford the necessary power. The lever is pivoted at its inner end to a stud 52 which upwardly projects from and is rotatably mounted in the end of the screw 46, which arrangement permits the lever to be turned independently of the screw and to impart rotation thereto inone direction only through the action of the dog against the lugs on the face of the hub 48.

The adjusting screw is screw threaded through the head 45, but travels freely through a collar 53 through whichit passes and which is provided with a slot 54 which cooperates with a spline or key 55 slidable within the slot, which arrangement imparts rotation to the collar but permits the adj usting screw to feed forward and back there through as the adjusting screw is moved. The collar is preferably provided on its peripherywith marks or graduations 56, which serve to indicate the degree of movement given to the adjusting screw by the rotation thereof.

The adjusting screw has, on its inner end, a bearing head 57 in which the smooth stub end 58 of the screw is entered, being held therein by a suitable device, as for instance, a split ring 59 the members of which are held in contracted position by set screws 60 or other suitable means. In order to pre-- rated.

vent the rotation of the bearing head a screw stud 61 is provided, the head of which is en tered between guide flanges 62 on the inner face of one of the arms of the mounting or frame, as shown in Fig. l. The graduated collar 53 is held in position on top of the mounting or frame by means of a yoke plate 63 which'is fastened to the frame or mounting by means of a pair of bolts er.

In use, when it is desired to straighten a rod or similar piece of work, the same is laid in position on the table resting upon a pair of supporting blocks 38, which aremoved to suitable position to support the rod on either side of the bent portion which it is desired to straighten. Vvhen'supported in this manner, the forward end of the rod will be closely adjacent to the cone stud of the clutch member, and. the center of the rod,

in which a cone slot has been drilled, will be i slightly below and in vertical alinement with the apex of the cone stud. These positions can be obtained by adjusting the'conc bearing at the opposite end of the rod to suitable position to hold the work as above indi- Power being applied to the shaft. the cone stud and clutch member will be revolved with the shaft, the work rei'naining stationary meamvhile. When it is desired to revolve thework the lever 30 can be drawn forward, which moves the cone bearing rod in its sleeve and'forces the work against the friction clutch, thereby forcing the latter back and compressing thesprings.

This retraction ofthe friction clutch disk and leather facing forces the work against the rapidly revolving cone stud which, when the clutch member is retracted and the work advanced, will engage the end of the work and center it by raising it slightly off of the bearing blocks. This ra-isingwill be accomplishedby the action of the beveled cone surfaces so that no further adjustment is necessary to impart rotation to the work. "With the work thus revolving a mark can be made with a piece of chalk, or similar marking substance at the intended point,,which mark should be made with the chalk held rigidly in the intended position} If the mark is broken at any point, such break will indicate a depression or bend in the work after which the traveling frame or mounting can be moved to a position directly above the defective point in the work and pressure applied thereto by revolving the screw.

Pressure can be centered between any de-.

sired points by increasing or decreasing the distance spanned by the work between the two blocks, thereby accommodating bends of greater or less length or degree. The gradu ations on the collar enable the operator to judge of the amount of movement of the screw and the roportionate pressure applied thereby. Kfter pressure has been eplOZi plied in the manner indicated, tests-ean be made with the chalkmarker pntil the work is exactly straightened.

By locating the parts in the manner indicated the compression screw can be quickly adjusted to any desired position so that of the work provided with a member adapt-j ed to automaticaliy lift and center the work whenthe latter is longitudinally moved by tlie 1 ovement of the hearing at the opposite end of the work a block upon which the wtitk is supported when at rest in a position below the position to which it is automatrically raised by the centering member, and 1neans for applying pressure to the work,

substantially as described.

In a straightening machine, the combination of a bearing adapted to engage one end of the work, means for moving the hearing to give a longitudinal movement to the work, a friction clutch for the opposite end of the work provided with a member adapted to automatically liftand center the'work when the latter is longitudinally moved by the movement of the hearing at the opposite end of the work, a block upon which the work is supported when at rest in a position below" the position to which it is automate icall raised by the centering member, and nTea s, longitudinally movable from end'to end of the work, for applying pressure thereto, substantially as described.

3. In a straightening machine, the combination'of a bearing adapted to engage one end of the work, means for moving the bearing to give a lon itudinal movement to the work, a friction c utch for the opposite end of the work, provided with a cone member adapted to lift and center the work, a block upon which the Work is suppprted, when at restjiira position below the axis of the cone, and means for applying pressure to the work, substantially as described.

,4. In a straightening machine, the combination of a bearing adapted to engage one end ofthe work, means for moving the bearing to give a longitudinal movement to the work, a friction clutch for the opposite end of the work, provided with a conemember adapted to ,lift and center the work, a block upon which the work is supported, when-at rest, inaposition below the axis of the-cone,

additional 1 and adjustable means for applying pressure to the work at a predetermined point, substantially as described.

5. In a straightenin machine, the combination of a bearing adapted to engage one end of the work, means for moving the hearing to give a longitudinal movement to the work, a friction clutch for the opposite end of the work, provided with a cone member adapted to lift and center the work, a block upon which the work is supported, when at rest, in a position below the axis of the cone, an adjustable screw member, provided at its lower end with a bearing head, a mounting for said screw member,- and a track upon which the mounting is adapted to run, substantially as described.

6. In a'straightening machine, the combination of a bearing adapted to engage one end of the work, means for moving the bearing to give a longitudinal movement to the work, a friction clutch for the opposite end of the work, provided with a cone member adapted to lift and center the work, ablock upon which the work is supported, when at rest, in a position below the axis of the cone,

an adjustable screw member, provided at its lower end with a bearing head, a mounting for said screw member, a track upon which the mounting is adapted to run, and a hand wheel on the upper end of the adjustable screw, substantially as'described.

7. In .a straightening machine, the combination of a bearing adapted to engage one en of the work, means for moving the beari g to give a longitudinal movement to the work, a friction clutch for the opposite end of the work, provided with. a cone member adapted to lift and center the work, a block upon which the Work is supported, when at rest, in a position below the axis of the cone, a mounting of inverted U-shape provided with wheels, a trackway along which'said wheels are adapted to roll, an adjusting screw'entered through said mounting, and prdvided at its lower end with a bearing head and atitsupper end with means for imparting rotation thereto, substantially as described.

,8. In a'straightening machine, the combination of a bearing adapted to engage one mwork, a friction clutch for the opposite end of the work, provided with a cone member adapted to lift and center the work, a block upon which the work is supported, when at.

rest, in a position below the axis of the cone,

a mounting: of'inverted U-shape provided with wheels; a trackway along which said wheels are adapted to roll, an adjusting screw entered through said mounting, and provided at its lower end with a bearing head and atits upper end with means for imparting rotation thereto, and a graduated collar, revoluble with the hand wheel and adapted to indicate units of adjustment, substantially as described.

9. 111 a straightening machine, the combi nation of a supporting table, a bearing for one end of the work, comprising a bearing member adapted to engage the end of the work, and a mounting therefor permitting longitudinal adjustment, a clutch member for the opposite end of the work, comprising a spring supported friction member adapted to bear against the end of the work, a cone member normally behind the frictional surface of the friction member and adapted to be outwardly projected, with respect to said frictional surface, by the retraction of the latter, due to longitudinal movement imparted to the work by the movement of the end bearing, means for imparting rotation to the friction clutch member, and adjustable means for exerting a straightening pressure on the work, substantially as described.

10. In a straightening machine, the combination of a supporting table, a bearing for one end of the Work, comprising a bearing member adapted to engage the end of the work, and a mounting therefor permitting longitudinal adjustment, a clutch member for the opposite end of the work, comprising a spring supported friction member adapted to bear against the end of the work, a cone member normally behind the frictional surface of the friction member and adapted to be outwardly projected, with respect to said frictional surface, by the retraction of the latter, due to longitudinal movement imparted to the work by the movement of the end bearing, means for imparting rotation to the friction clutch member, a screw member provided with a head adapted to exert a straightening pressure on the work, and a mounting of inverted U-shape adapted to travel along the table, through which mountin thead usting screw is entered, substantia ly as described.

11. In a straightening machine, the combination of a supporting table, a bearing for frictional surface, by the retraction of the Y latter, due to longitudinal movement imparted to the work by the movement of the end bearing, means for imparting rotation to the friction clutch member, a screw mem ber provided with a head adaptedlto exert a straightening pressure on the work, and a mounting of inverted U-shape adapted to travel along the table, through which mounting the adjusting screw is entered, and a block for holding the work, when at rest, below the axial center of the cone member of the friction clutch, substantially as described.

12. In a straightening machine, the combination of a table, a bearing for one end of the work, comprising a rod having a'cone at its inner end, and a mounting for said rod adapted to permit longitudnal adjustment, a friction clutch adapted to engage the opposite end of the work and comprising a cone stud, a slidably mounted clutch disk .surrounding said cone stud, and provided on its face with a friction disk adapted to engage the end of the Work, the clutch member being retractable to permit projection of the cone stud and contact thereof with the work, springs for normally holding the clutch disk in projected position, a shaft into which the cone member is entered, means for imparting rotation to the shaft, and straightening means adapted to be adjusted to different positions with respect to the Work, substantially as described.

ROBERT MILNE. Witnesses:

SAML. H. BECK, W. B. BOWIE. 

